Screen-frame construction



Sept. 16, 1930. H. H. EVERHARD SCREEN FRAME CONSTRUCTION Filed April 9,1929 2 Sheets-Sheet 1 gmwntoz Hf! [We/bard Sept. 16, 1930. H. H.EVERHARD 1,775,717

SCREEN FRAME CONSTRUCTION Filed April 9', 1929 2 Sheets-Sheet 2 llllllPatented Sept. 16, 1930 Ir%K F H WZEMARD;-QF CANTON, x110 semen-minecoirswjaeeeroa f rmine are Kim s,

' 1 116 inventiendrelates tofwindow screens :su'ehz asiareusecl;for-wentrlating. urposes or asifly screens, and more particularlyto an "weolen' irame becomes damper Wet, "because of 'meisture an: *theatmosphere from; abnormel humiditwdew; on because of rain storms.daniphess oi m'oi'stur'e is alesorloeol"loyilthe wooden frames causingthe same towswll,

p.15 thus reventing 'rfr'ee adjustment of ithe 'sereeny-andwsemetimesjnstment Whatsever.

preventingsany adoast by::eenstruet in sereensframesidf sheet met a1which is "substantially unafiee'ted 'xmather eenditions. iniiord'er'"lthatgimetal frame: eensteueti-en be :satisfaetbry, Yfreeslidaktibn between: the 5 "several adjustable frame members must=be-provided for, and me ans for" dumping i a fsepeenfabrie to the metalframe must be provided.

- Heweve'r;the preduetin xofi a screen haw ing a" metal :famerprogvidedxwith the desired stru'etufr a oharaeteri'stiosifhas beenso "expensive that such metaPfmme screens' have not been able iteempeteen the'open market with screens having-Wooden f mesa 'My-pri'or'Tateiit NOE- 1, y l lof January 11, "1927""iselosesiiifetal-iframe 'sereeil' 00nstruction which 'hasfthe desired"characteristics, 'but*when ship in 01-- using such screens, thechannels andfedges proi idingnthe slidi g-edge centaetibetween-"thetwo'iifiram s jammed orbum-ped shipjoi-ng or because of talling: ona-{c'orner on-an edgewhen beingin- *stalledioruse. H Such denting-damageor in jury-*tdw-thebhannelandflange-elements may 1 prevent the screenflames from being easily orproperly-adjusted. a 2 YhIyp'I'iOr-PEteiafiNO; 1",6953691 0i-Dece1'11her "1-1; 12928dise'losesimetal ffiarne screen :con-

struc tion in which these difliculties are ewei may :hecome bent orjde'nted because of being product of thesame' formingrolls; thus beingisimilarlin"eross'seotion. r 1

'The screen frameconstruction of the latter patent, however, does nothave a continu- "ous firee edge sliding "contact betweenfthe 155 framesWhich is a most desirable featu'reof imy 'liormer' p atent; Theconstruetionro'ffmy latter {patent also 'includes various accessory:p'arts, cli s and rods hecessary for complete- 13, assemblifigthe semenP 1 2 'fl3ec'ause f thei'la'rge number of: pieces used in themenstruation of screen frames such' as f shownin'my prior patentsythefcost of producing the same is:considrablyYgreater' than :the 'c6st 'ofprodueing sereens having wooden 26 frames.

v w v 'The obj e'ct '"of-theijpresent invention i is 'lhesedifficulties/ have been overcame in the mheremre to provide a *imetalframe screen having a very small number of partsy'to provide a scr'eenha vinga'aficost of iconstruc 17 tionwqual toanrfieless than Woodenframe "screens; to fprovide a--scre'en havingma free sliding edge-Contact between-the adj ustable constituent :frameg' whi'ch edgecontact eon- ;striietionfis proteeted ifnomlinjnry "ori damage 3-7 7.

in -shipping "on in use f to provide a screen having rounded corners andhaving a-neat and smoeth: appearance s and 5130 provide a scream havingLsufiicient frame strength I to Withstand the shocks and strainsimpdsedup-" i "m tt-1e: screen 'w'ithout the use eof rods for"reinforcement and for olampingi theiscreen -fia briiC'jt'othe frame. li These and other objects maybe attained by I a -'e0nstruct-ion in"Which I the constitue'nt adjustable frames are-'eaheomposed' ofithreeparts;.f namely; a? gframef bar -ibeht to form three sides of the se eeframe, an end bar dumped by the' franiabar tel-form the fourth side ofthe frame; an'd 'sereengfabfriciclam eddire'etly'byjandhetjjeenjgortions of theframe barand end bar. V e I V aMoreover the objeets o f the invent on are attained; Qby ,i'providing; aeonstruot ion in .whichthe frame bars of both constituent .frames arethe product of the sameforming ml-1s and-have lsubstant-i allylthe samecross sectional arrangement randy-in which the end ziba/ilszarexmadedammi'the sam stockw-matriall being only slightly modified in shapeduring assembly.

An embodiment of the invention is illustrated in the accompanyingdrawings in which Figure 1 is a front elevation of the improvedadjustable screen;

Fig. 2, a plan view of a mitred strip from which the frame bar of one ofthe constituent frames is formed;

Fig. 3, a plan View of a mitred strip from which the frame bar of theother constituent frame is formed;

Fig. 4, an elevation of a frame bar partially formed from the stripshown in Fig. 2;

Fig. 5, an elevation of a frame bar partially formed from the stripshownin Fig. 3;

Fig. 6, an enlarged section taken as on the line 66, Fig. 4;

Fig. 7 an enlarged section taken as on the line 77, Fig. 5;

,Fig. 8, an enlarged section showing the manner in which screen fabricis clamped by the frame bar shown'in Figs. 4 and 6, and taken as on theline 8-48, Fig. 1;

Fig. 9, an enlarged section showing the manner in which screen fabric isclamped by the frame bar shown in Figs. 5 and 7, taken as on the line9-9, Fig. 1;

Fig. 10, an. enlarged section showing the sliding edge contactconnection between-constituent frames having frame bars shown in Figs. 8and 9, and taken as on the line 1010, Fig. l;

Fig. 11, an enlarged'elevation of one corner portion of one of-theconstituent frames;

Fig. 12, an enlarged elevation of one corner portion of the otherconstituent frame;

Fig. 13, a fragmentary elevation of screen fabric having .angularly cutcorners, showing the same ready to be clamped by an end bar;

Fig. 14, an elevation of an end bar ready to be attached to the screenfabric shown in Fig. 13; r

Fig. 15, a fragmentary elevation showing the end bar and screen fabricattached together ready to be clamped by the frame bar;

Fig; 16, a fragmentary elevation showing the fabric and end barassembled with and clamped by the frame bar;

.7 as on the line 1818,Fi'g. 14;

Fig. 19, a cross section showing the screen fabric attached to theend'bar as on the line 19-19., Fig. 15; and

. Fig. 20, a sectional view showing the man ner in'which the end baris'clamped bv the frame bar taken as on the line 20-20, Figs. 1 and 16.Y

Similar numerals refer to similar parts throughout the drawings.

The screen consists of two frame sections A and B, which are slidablyconnected together so that the screen as a whole may be adjustedlongitudinally in order that the same may be placed in window frames ofvarying width.

The frame A consists generally of a frame bar 21, an end bar 22 andscreen fabric 23; while the frame B consists of the frame bar 24, theend bar 25 and the screen fabric 26.

The frame bars 21 and 24 are preferably formed from metal strips 27 and27 respec tively. The continuous strip 27 is preferably first mitred at28 and 29 at two places along its length where two corners of the screenframe are later to be formed. The mitred strip 27 is then passed througha series of rolls to form the strip into the shape shown generally at 30in Fig.6, which in cross section may be channel-shaped, including a web31, and flanges generally indicated at 32and 33.

The substantially Z-shaped flange 32 may consist of a downturned.portion 34 extending from the web 31, an outturned portion 35 forming aconvex angle as at 36 with the downturned portion 34, and an outwardlydownturned portion 37 extending from the optturned portion 35 to formthe concave an- 0 e 38. i i a The substantially Z-shaped flange 33 mayinclude an inwardly downturned portion 39, an outwardly downturnedportion 40, a second inwardly downturned portion 41, an outturnedportion 42 and adownturned portion 43. The convex angle 44*isformed between .the portions 39 and .40, the concave angle 45 beingformed between the portions 40 and 41, and the convex and concave angles46 and 47 being formed respectively between the portions 41' and 42, andthe portions 42 and 43, all as shown in Fig. 6.

Similarly, the strip 27 may be mitred at two places along its length asat 48 and 49 and the strip may then be passed through the same series offorming rolls through which the strip 27 was passed. In carrying out theforming operation on the strip 27, the same is shifted sidewise relativeto the rolls so that the resulting channel formation will be shiftedrelative to the width of the strip to produce the channel shape showngenerally at 50 in Fig. 7.

This channel shape may include'a web 51 n and flanges 52 and The flange52 may be composed of a downturned portion 54, an

outturned portion 55, forming with theportion 54 the convex angle'56.The outwardly downturned portion 57 forms a concave angle "58 with theoutturned portion and is then upwardlyand outwardly curved half round asat 59, and ends in the upwardly inturned portion 60 which extendssubstantially parallel with theoutwardly downturned portion 57 f Theflange may consist of an inwardly grooves. throughoutzthe. length. ofthe zstripsx turned portion 62, a secondinWardlyldoWn= 1 turned portion.163 and theturned nedge 6L Convex and concave: angularr: bends are)formed between tithe several .zportions. 1 .61; 62,11 63;and64e oftheflangebg zas at 65,, 66 and 6,7,

56, 58,66 and-==l67aandtheend bar will 1 Thestrips 27 and 28 are'sopositionedvint. passing through the series of. forming rollsthatz-theresulting channelshapesand 50.; willizhave the .mitreiportions:28: and 29, and 48.: and. 49 registering! as shown generallyat 68-and69 respectively in Figs. 4 and.5; and so that the'various convlenandconcave angles allas: shown; in; Fig. 7 ofthe'drawingsiz inficrosssection 7 form; continuous ribs and Theportions 31, 84,. and 39 of theshape 30,

andportionsfil, fi land 61.0f the shape 50 thus; form a boxichannel andthe registering mitre:

,,portions68 and69 extend only to thebox Within the concave anglei45 ofthe flange 36.-

Atdheszim' e time, the convex angle 46 ofthe; flange-33 engages thescreen fabric against thejfconcave angle -38 "of the flange 32. The;vscreen fabri'c is thus seeurely clamped'by the channel as shown-at 70and7.1 in Figs. 4c and 5,. The :box'channel of -each shape 30 and 250"is then bent inwardso as to bring the IIllhIGCl edges togeth'er;tofrown-threesides of the rec- 1 tangular if-rame sections A sand Bhaving; cor ners-7and :73 WBllyShOWIL in. Figs; '11 and 12..

The formation lof the" corners" 7 2 and; .73: is

strong and: smooth. without: having any ex:

posed edges of: sheet. man and corresponds g tovthegco'rner:construction: disclosed .inamy Patent No.:1,695,081, ofDecember 11,1928:

In assembling the iframe Agthe screenfabrie-23wthcreof has.itscornersxangularlyxcut off asush'ownat 74 'in Figs. land-n13. The

i end portion 75.of =the-fabric isthenengagedi between vthe iparallelportions176% of a the: U4

shaped end bar--22 after which the end barlis bent angularly-havinglaflange portion-.77 to permanently secure the screen fabric to theendbanas is Well shown in Eigh [19.

' Each e ppor tion 78 of-the end bar isthen formed with a flange 79;andangular portions 80 and 81- as shown inFigs: 15 and 171:1

convex angle 86 engages the screen fabric 23 ribs: .and grooves of theiframe 1 bar. flanges Without the. use ofa'any. special. clamp-nor."

clampingrods.

.Meanwhile, the end-char i2-2ivis the. frame. bar 212' witltthe flangeportion .78 secnrely elamipedbetween the portions; 3-1, a

have its Fend flanges:78 -secu-rely clamped by the: portions; 51, 54;;and. 61" of the {frame @bar' 24: to form :the frame section "B all as}shown. in Figs: 9 and 20." a i The end bar 25 ofztheframeasection Bvissimilarin all respects to"the-.end-ban2Z;of4

the "frame sectionA excepting that the flange:- 7 7? thereof isturnedxin adi'rectionoppqsitez, llOj theflange 77 of the endbar 22 as;shownv in Fig. .20 so as to limit the opening'movement o fathe assembledscreen: i a.

The two frame sections A and B are then; slidablyaengaged togetherto-produceth'e adjustable screen shown in Fig. 1, bylongitudinallysliding the portion: 43,; of the frame ibar; 21 within the Ushapedchannel formed by; the: portions =57, 59 and 6.0 of the-.frame bar1 2% This sliding engagemente between the: twe screen frames A'andB is aslidingziedgeicone tactsimilarrin some-respects to% a sliding edgescontact shown.- in my prior- Patent 'No. 1,614,",

1910f January-.11," 1927' excepting that. the

portions formingthesame arenot" atthe' 8X1:

treme-Iedges of the screen, but are= protectcdfl from injury: anddamage? by being located: along the inner adj aeent aedges ofwtheframeba-rs21 and 2 The resulting adjustable screenis thus providedwithaa'free' slidingedge contact between V e e forming the screenfabric: Theend b'ar 22 With the' screen fabric'23 secured thereto isthen usli dl longitudinally into the parti'allsyi 1? completed"three-sided: frame abovedescribed. Theframemay then be placed in asuitable; pness Which-is open ated 1 to: pressthe flanges 132 and:together 5a to securely clamp the screen fabric 23 between thefi'angesin amannershofwn in Fig. 8. Durit ing thisk pressing operation, theflange 32 "is a bent inward toward the flange 33 so thatthe metal;channel-barihavi-ng av Web and sub stantially Z;-'shape d flangesextending in- Wardly therefr'ornfo'rming a plurality of box channelframe side niembers, and the screen fabric beingwsecured between andclamped by thel shap'ed flangesof the chan nel bar. i i i .2. ;A screenineludingaa" frame, and screen fabric, the frame including a one-piecesheetv metals channel-bar; forming a, plurality of the.frame-sidemembers;t e; annel-bar in:

cluding a Web and flanges extending inwardly therefrom to form a boxchannel, there being a rib formed in one flange and a groove formed inthe other cooperating with the rib, and the screen fabric being locatedbetween the flanges and secured between and clamped by the rib andgroove.

3. A screen including a frame, and screen fabric, the frame including aone-piece sheet metal channel-bar forming a plurality of the frame sidemembers, the channel-bar including a web and flanges extending inwardlytherefrom to form a box channel, there being a rib and groove formed inone flange and a groove and rib formed in the other cooperatingtherewith, and the screen fabric being located between the flanges andsecured between and clamped by the ribs and grooves.

4. A screen including a frame, and screen fabric, the frame including aone-piece sheet metal channel-bar having a web and substantiallyZ-shaped flanges extending inwardly therefrom forming three box channelframe side members, and an end bar forming the fourth frame side member,the end bar being secured between and clamped by the Z-shaped flanges ofthe channel-bar, and the screen fabric secured atthree edge portionsbetween and clamped by the Z- shaped flanges of the channel-bar andsecured at its fourth edge portion by and clamped by the end bar.

5. A screen including a frame, and screen fabric, the frame including aone-piece sheet metal channel-bar forming three of the frame sidemembers, and an end bar forming the fourth frame side member, thechannelbar including a web and flanges extending inwardly therefrom toform a box channel, there being a rib formed in one flange and a grooveformed in the other cooperating with the rib, the end bar being securedbetween and clamped by the flanges of the channel-bar, and the screenfabric being located at three edge portions between the flanges andsecured between and clamped by the rib and groove and secured at itsfourth edge portion by and clamped by the end bar.

6. A screen including a frame, and screen fabric, the frame including aone-piece sheet metal channel-bar having a web and substantiallyZ-shaped flanges extending inwardly therefrom forming three box channelframe side members, and an end bar forming the fourth frame side member,the channel-bar including a web and flanges extending there from, endflanges on the end bar, the end flanges being secured between andclamped by the channel-bar web and Z-shaped flanges, and the screenfabric secured at three edge portions between and clamped by the Z-shaped flanges of the channel-bar and secured at its fourth edge portionby and clamped by the end bar.

7. A screen including a frame, and screen fabric, the frame including aone-piece sheet metal channel-bar having a web and substantiallyZ-shaped flanges extending inwardly therefrom forming three box channelframe side members, and a U-shaped channel end bar forming the fourthframe side member, the end bar being secured between and clamped by theZ-shaped flanges of the channel-bar, and the screen fabric securedbetween and clamped by the Z-shaped flanges of the channel-bar and theend bar.

8. An adjustable screen comprising a pair of sheet metal frame sections,each frame section including a one-piece channel-bar having a web andsubstantially Z-shaped flanges extending inwardly therefrom forming aplurality of box channel frame section side members, and screen fabricsecured between and clamped by the Z-shaped flanges of the channel-bar.

9. An adjustable screen comprising a pair of sheet metal frame sections,each frame section including a one-piece channel-bar forming a pluralityof the frame section side members, each channel bar including a web andflanges extending inwardly therefrom to form a box channel, one of theflanges of one of the channel-bars having a rounded U-shaped channelextending therefrom, one of the flanges of the other channel bar havingits free edge portion slidably engaged in sliding contact with thebottom of the U- shaped channel, and screen fabric for each framesection secured between and clamped by the flanges of the frame sectionchannelbar.

10. An adjustable screen comprising a pair of sheet metal framesections, each frame section including a one-piece channel-bar hav ing aweb and substantially Z-shaped flanges extending inwardly therefromforming three box channel frame section side members, and an end barforming the fourth frame section side member secured between and clampedby the Z-shaped flanges of the channel-bar and screen fabric for eachframe section secured at three edge portions between and clamped by theZ-shaped flanges of the frame section channel-bar and secured at itsfourth edge portion by and clamped by the end bar.

11. An adjustable screen comprising a pair of sheet metal framesections, each frame section including a one-piece channel-bar having aweb and substantially Z-shaped flanges extending inwardly therefromforming three box channel frame section side members, and an end barforming the fourth frame section side member secured between and clampedby the Z-shaped flanges of the channel-bar, screen fabric for each framesec-tion secured at three ed e portions between and clamped by theshaped. flanges of the frame section channel-bar and secured at itsfourth edge portion by and clamped by the end bar, and flanges on theend bars limiting the opening movement of the screen.

In testimony that I claim the above, I have hereunto subscribed my name.

HARRY H. EVERHARD.

